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MHT CET Physics question

PhysicsDual Nature of Matter and RadiationMHT CET

For a photodiode, the forbidden energy gap () of the material used is 2.8 eV and wavelength of radiations () incident on it is 5780 Å. Then the emission of electrons is possible when incident radiation have,

Answer: (B)

Solution

Electron emission needs photon energy , i.e. a wavelength shorter than the limiting value; radiation of

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Question ID VK-085435